• 제목/요약/키워드: Earth revolution

검색결과 78건 처리시간 0.028초

사이버공간을 이용한 가구디자인의 조형적 특성에 관한 연구 (A Study on The Plastic Characteristic of Furniture Design Using Cyberspace)

  • 김건수
    • 한국가구학회지
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    • 제21권4호
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    • pp.326-337
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    • 2010
  • The invention and development of digital computer networks since the post-modern culture and creating new ideas, and in nearly all areas since the industrial revolution has had the greatest impact. A new paradigm for the 21st century, the Internet and ubiquitous, and mobile devices are being created by the new culture is being created. Rapidly being replaced by digital and analog, and 'Digilog' fusion concept has appeared. In addition, the development of computer cyberspace culture, art, design and structure are changing. In the field of furniture design, changing design processes and innovative design philosophy that change is now occurring. These symptoms experienced at the same time, almost every country on Earth is a phenomenon. Since the 20th century, computer network design based on the relationship between digital and cyber culture espoused by philosophers studied society and organic modernism and organic design of digital-based differences are confirmed through the case. Using digital technology, modeling case study of a furniture designer in cyber space and the creation of human capabilities and the fusion of computing power will be studied in modern furniture design.

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Multiple revolution Lunar Trajectory Design using Impulsive Thrust

  • Kang, Hye-Young;Song, Young-Joo;Park, Sang-Young;Choi, Kyu-Hong;Sim, Eun-Sup
    • 한국우주과학회:학술대회논문집(한국우주과학회보)
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    • 한국우주과학회 2008년도 한국우주과학회보 제17권2호
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    • pp.25.3-26
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    • 2008
  • The direct way to the moon is to start from the parking orbit by using impulsive thruster In previous domestic research, the direct way has been studied by using a single impulsive shot. However, when a single impulsive shot occurs to go into a Translunar orbit, gravity losses occur because thruster is not impulsive shot but the finite burns and it causes the gravity losses. To make up for the weak point of a single impulsive shot, this paper divides TLI (Trans Lunar Injection) into several small burns. Therefore, departure loop trajectory and the Translunar trajectory. This method is useful not only to reduce the gravity losses but also to check the condition of satellite. By using this method, this paper demostrates the optimized trajectory from Earth parking orbit to lunar mission orbit which minimizes the fuel, and the SNOPT (Sparse Nonlinear OPTimizer software) is used to find optimal solution. Also, this paper provides lunar mission profile which includes the mission schedule when TLI, LOI (Lunar Orbit Insertion) maneuvers occur, a mount of fuel when thruster is used and other mission parameters.

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원적외선이 흰쥐의 생존율에 미치는 영향 (The effect of Far-infrared on survival rate of mice)

  • 김재윤;박승규;김진상;박래준
    • The Journal of Korean Physical Therapy
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    • 제13권3호
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    • pp.561-567
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    • 2001
  • IR classified by wavelength three parts NIR, MIR. FIR. There is FIR which is radiated from healthy human body the wave length is 8-14m. The Sun's ray is composed of Infared(49%), Visible light(40%) and Ultra violet(11%), however the ray getting to the earth is FIR(60%), IR(20%), and UV(20%). Human beings has utilized FIR already from time immemorial. Hershel found out Infrared for the first time, in the Industrial Revolution the Infrared and FIR had been begun to use making products. FIR with low temperature can deeply penetrate on the human body composed things without troublesome, since FIR has effectively operated on the human body at low temperature (35-40 $^{\circ}$C). In this study, we experimented in the specific temperature FlR radiation intensity. water consumption rate, feed consumption rate. survival rate and mean of weight balance with FlR radiation instrument. According to the results, the FlR radiation to the mice assisted to increase the survival rate.

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Far-Infrared의 발전사와 물리치료 적용에 대한 연구 (A Study of Far-Infrared History and Application to Physical Therapy)

  • 김재윤;박래준;박영한
    • The Journal of Korean Physical Therapy
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    • 제13권1호
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    • pp.189-195
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    • 2001
  • The Sun's ray is composed of Infared(49%), Visible light(40%) and Ultra violet(11%), however the ray getting to the earth is FIR(60%). IR(20%), and UV(20%). Human beings has utilized FIR already from time immemorial. Hershel found out Infrared for the first time, in the Industrial Revolution the Infrared and FI R had been begun to use making products. In asia. also, asian already has made use of FIR to treat the body, product things and make warm the house in the winter, as it had been called Wull therapy, fermentation. and On-Dol system. In these days, with contemporary science FIR would be begun to clear up the implication in the human body and organic compounds. IR classified by wavelength three parts NIR, MIR, FIR. There is FIR which is radiated from healthy human body the wave length is 8-14 m. It is difficult to standardized the wavelength of IR, since each related associations have a different opinion, so we suggested ideal IR wavelength and biological, phsiotherapical, medical FIR wavelength.

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조선시대 심의 구성이론 (The Construction Theary of "Sim-Eui" During Chosun Dynasty)

  • 조효춘
    • 복식
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    • 제27권
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    • pp.27-40
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    • 1996
  • 1.It was recorded at "Dong Gook Tong Gam" of King "Jang Soo" that "Sim-Eui" in Korea was first introduced from China at the reign of King, "Moon Ja"(491,A.D), Go Goo Ryo. 2."Sim-Eui" was worn as a mourning dress during the period of "Go Ryo" and as a concanical robe of Confucian, a ceremonial dress at home and for the rules of etiquettes during Cho Sun Dunasty. 3.Several theories about the construction and the using services of "Sim-Eui" are obseved and summerized. 4.Mr. Kyu-soo Park gives a definition to "Sim-Eui" as a Fortune of Heaven & Earth, the Constellation of the Cosmic Dual Forces, the Revolution of the Four Seasons, a dignified mien & the Way of a Man of Virtue and Virtue of the golden Mean. 5.I observed the concrete measurements of the each parts of "Sim-Eui" by the construction method of Kyu-Soo Park. 6.The Symbolic Meaning following the Idea of Mr. Chung, Hyun. describes well the line of thinking in our nation, and Idea of Loyalty & Filial Piety, a Man of Virtue and the Virtue of the Golden Mean. 7.As described above, I dare insist of the fact that the Construction Theory of "Sim-Eui" by Kyu-Soo Park during the letter period of Chosun Dynasty is full of our national manners and cus-toms with symbolizing meaning, construction's exquisiteness, clothes' materials and it's size most suitable to our people, to the exclusion of the defects in "Sim-Eui" of China and Japan.

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우리나라와 미국 초등 과학 교과서의 천문 영역 내용 비교 분석 (A Comparative Analysis of Astronomy Areas in the Elementary Science Textbooks of Korea and the U.S.A.)

  • 권계현;박일우
    • 한국초등과학교육학회지:초등과학교육
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    • 제29권2호
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    • pp.166-185
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    • 2010
  • Astronomy areas in the elementary science textbooks of Korea and the U.S.A. have been compared to find advantages and disadvantages of Korean textbooks. The analysis objects are the 7th national curriculum science textbooks for Korea and the Macmillan McGraw-Hill(MMH) science textbooks for the U.S.A. The results are as follows: First, in contexts, Korean science textbooks contain mostly inquiry activities and partly reading materials. However, MMH ones contain mostly explanations including photographs, related activities, and various reading materials. Second, in the contents and order, the observation activities of constellations are emphasized in Korean science textbooks, while the MMH ones explain solar system up to the universe in details. In addition, Korean science textbooks deal with one subject only once during the whole elementary course while MMH ones deal with one subject repeatedly in several grades. Third, in the frameworks of the international mathematics and science study (TIMSS) 2007, Korean science textbooks do not introduce some contents presented in TIMSS 2007, whereas MMH textbooks introduce every one of them in time. Fourth, the major subjects such as change of moon phases, constellations, the solar system, and change of seasons are handled independently in Korean science textbooks without strong correlation, while they are systematically done related with the rotation and the revolution of the earth in MMH ones.

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The Psychiatrist and the Revolutionary: Frantz Fanon's Critique of Colonial Discourse

  • Rasmussen, Kim Su;Sorensen, Eli Park
    • 비교문화연구
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    • 제24권
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    • pp.5-18
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    • 2011
  • This article offers a reflection on Frantz Fanon's diagnosis and analysis of French colonialism in Algeria. We will attempt to demonstrate that there is a concrete and clear connection between Fanon as the psychiatrist diagnosing the devastating effects of the French colonial system, and his subsequent political involvement in the Algerian revolution. This is not to say that each part does not contain valuable insights in their own rights, but rather to stress that without being read together, as a whole, one would miss a significant element in the understanding of the importance Fanon's thought subsequently came to play in the emancipation struggles of the colonized worldwide. Furthermore, we argue that it is crucial to understand the intimate connection between Fanon's psychiatric work, his diagnosis of colonial mental disorders, as well as diagnosis of the colonial system as such, and then his political engagement, in order to understand the particular context in which he favourably discusses the use of violence in the name of fighting against the oppressive system of colonialism. Above all, we argue that Fanon's critique of colonialism continues to spark controversy because it still represents the most powerful and incisive analysis of, as well as answer to, the troubled relationship between the blessed and the wretched of the earth.

기업의 환경 지향성이 직원 만족, 조직 몰입, 충성도에 미치는 영향 (The Impact of Company's Environmental Orientation on Satisfaction, Organizational Commitment, and Loyalty)

  • 전영미
    • Journal of Information Technology Applications and Management
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    • 제31권4호
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    • pp.163-178
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    • 2024
  • The development of industry since the Industrial Revolution has caused environmental destruction and is threatening to destroy the order of the Earth's ecosystem. Due to the severity of environmental problems, companies are facing a crisis where they may lose competitiveness if their management strategies do not prioritize environmental issues. This study studied the impact of a company's environmental orientation on employee satisfaction, organizational commitment, and loyalty. This study studied the impact of a company's environmental orientation on employee satisfaction, organizational commitment, and loyalty. As a result of the study, the internal and external environmental orientation of the company on satisfaction had a significant positive influence and were all adopted, while the internal and external environmental orientation on organizational commitment were all rejected as they had no significant impact. Satisfaction was found to have a significant positive (+) effect on organizational commitment and a significant positive (+) effect on loyalty, so both were adopted. Organizational commitment was adopted because it had a significant positive effect on loyalty, and internal and external environmental orientation had no significant effect on loyalty, so it was all rejected. A company's green environmental orientation plays an important role in a company's sustainable growth and can be formed based on the company's will. Therefore, this study shows that a company's environmental orientation improves the company's environmentally friendly image and provides positive value to organizational members, leading to improved corporate performance.

순위 선다형 문항을 이용한 천문 시스템 학습 발달과정 개발 및 타당화 연구 (Development and Validation of a Learning Progression for Astronomical Systems Using Ordered Multiple-Choice Items)

  • 맹승호;이기영;박영신;이정아;오현석
    • 한국과학교육학회지
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    • 제34권8호
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    • pp.703-718
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    • 2014
  • 이 연구에서는 지구, 지구 - 달 계, 태양계, 그리고 은하와 우주를 포함하는 천체의 구조와 운동을 종합한 천문 시스템(astronomical systems)의 학습 발달과정(learning progressions)을 조사하기 위하여, 순위 선다형 평가 문항을 개발하고 이를 초등/중학생들에게 적용한 검사 결과에 기반하여 학습 발달과정 해석의 타당성 검증의 근거를 제시하였다. 연구의 과정은 '구인특화, 평가문항 개발, 평가결과 기술, 측정 모델'로 이루어진 4 단계의 구인 모델링 방식(construct modeling approach)에 기반하여 진행되었다. 천문 시스템의 내용적 평가 구인으로 천체의 운동과 구조를 선정하였고, 탐구실행적 평가 구인으로 공간적 사고와 시스템 사고와 같은 천문학적 사고를 선정하였다. 이 연구에서 개발된 순위 선다형 평가 문항들은 천문 시스템에 대한 학습 발달과정을 조사하기 위한 검사 도구로서 적절하였다. 즉, item fit 분석 결과는 학생들의 문항 반응 결과가 Rasch 모델로 측정한 결과와 부합하였다. 그리고 Wright map 분석 결과는 이 연구의 평가 문항들이 천문시스템에 대한 학생들의 가설적 발달 경로를 조사하는데 매우 효과적임을 보여주었다. 학습 발달과정의 하위 정착점에서 학생들은 천체들의 위치와 운동 방향의 변화를 지구에서 보는 관점에서 2차원 평면으로 해석하는 공간적 사고 수준을 보였으며, 지구-달 계의 모델에서 천체의 위치와 변화를 부정확하게 연결하거나, 태양계 행성들과 은하수에 대한 단순한 패턴을 인식하는 시스템 사고 수준을 보였다. 학습발달과정의 중간 단계에서 학생들은 우주에서 내려다 본 지구 및 지구-달 계, 태양계의 모델을 근거로 천체의 운동을 해석하는 공간적 사고의 수준을 나타냈으며, 천체의 구조를 구성하는 요소들을 이 모델들과 연관시키는 시스템 사고를 보였다. 학습 발달과정의 상위 정착점에서 학생들은 우주에서 내려다 본 관점에서 형성된 천체의 운동 모델을 지구에서 바라 본 관점에서 얻은 자료와 서로 연관시키는 관점 전환의 공간적 사고를 지구의 운동, 지구-달 계의 운동, 태양계 행성의 운동, 은하와 우주의 운동에 적용할 수 있었다. 또한 상위 정착점에 도달한 학생들은 천문 시스템의 설명 모델을 구성하는 하위 요소들 간의 상호연관성을 파악하고 이를 설명 모델에 적용할 수 있는 시스템 사고를 나타냈다.

상자 모형으로 추정한 동해의 생물 펌프 (Biological Pump in the East Sea Estimated by a Box Model)

  • 김재연;강동진;김응;조진형;이창래;김경렬;이동섭
    • 한국해양학회지:바다
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    • 제8권3호
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    • pp.295-306
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    • 2003
  • 산업혁명 이후 인류가 과량으로 방출한 이산화탄소가 지구환경에 어떤 영향을 미치는지, 그리고 해양이 흡수하는 탄소량의 크기가 얼마인지에 대한 연구들이 진행되고 있다. 대양과 비슷한 순환 특징을 가지고 있는 동해가 이산화탄소 증가와 지구온난화에 대해 어떻게 반응하는지를 알아보기 위한 연구계획의 일환으로 탄소순환에 중요하게 기여하는 생물펌프의 크기를 간단한 상자모형을 적용시켜 추정하였다. 매개변수로는 인산염을 사용하였는데, 동해에서 일어나고 있는 수층 구조의 변화를 고려해서 해수 수지와 용존산소 수지를 맞춘 다음에, 인산염의 과거 자료를 바탕으로 인의 순환 플럭스를 모사하였다. 1952년부터 2040년까지 모사해 본 결과, 동해에서 생물펌프는 점차 강화되고 있고, 현재 0.0156 Pg C yr$^{-1}$ 정도를 해양 내부로 내보내고 있는 것으로 추정된다. 한편 동해의 해수순환은 저층수를 만드는 것이 줄어드는 반면 중앙층으로 유입이 증가하는 추세이다. 산소가 풍부한 표층수가 중앙층으로 유입되면서 유광층에서 하강한 생물입자들의 분해가 이 층에서 활발해져서 영양염을 표층으로 되돌리는 것이 강화될 것으로 보인다. 이렇게 되면 생물에 의한 탄소제거가 늘어나게 될 깃이다. 지난 50년간의 생물펌프 변화로 블 때 산업혁명 이후 생물에 의한 동해의 인류기원 이산화탄소 흡수량은 0.025 Pg C 정도로 추정된다.